Back End Software Engineer

Posted 7 Hours Ago
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Brussels, BEL
In-Office
Entry level
Information Technology
The Role
Develop and maintain scalable back-end applications, APIs, services, databases, and business logic. The role includes secure authentication and authorization, cloud-based services, Kubernetes, serverless infrastructure, monitoring, troubleshooting, documentation, testing, and CI/CD integration. Candidates need Python and experience with multiple back-end frameworks, relational and NoSQL databases, REST API standards, observability tools, version-control workflows, containerization, identity standards, and the i2 technology stack. An AWS, Azure, or Kubernetes certification is required.
Summary Generated by Built In

At Uni Systems, we are working towards turning digital visions into reality. We are continuously growing and we are looking for a Back End Software Engineer to join our UniQue team.

What will you be doing in this role?

  • Develop and maintain back-end web applications, services, and business logic.
  • Design, develop, and optimize APIs and server-side functionality.
  • Integrate front-end components with back-end systems and databases.
  • Design and implement efficient, scalable, and secure data storage solutions.
  • Apply security best practices, including input validation, authentication, authorization, secure storage, logging, and monitoring.
  • Ensure application performance, scalability, and reliability through continuous optimization.
  • Participate in the design and development of scalable software solutions.
  • Maintain clean, organized, and high-quality code following established coding standards.
  • Analyze, troubleshoot, and resolve application issues through code review, monitoring, and debugging.
  • Perform unit and integration testing, validate code changes, and ensure software quality.
  • Deliver solutions that meet functional and non-functional requirements and user expectations.
  • Create and maintain technical documentation.
  • Configure and support cloud-based back-end services, including serverless functions, storage services, and managed Kubernetes environments.
  • Implement and maintain authentication and authorization mechanisms to secure APIs and services.
  • Develop and maintain automated unit and integration tests within CI/CD pipelines.

Requirements

What do you need to succeed in this position?

  • Proficiency in back-end development with Python and experience working with frameworks such as Spring Boot, Hibernate, and Node.js.
  • Strong understanding of the full web development lifecycle, programming concepts, development tools, and best practices.
  • Experience with Application Performance Monitoring (APM) tools such as Dynatrace, Splunk, and Elastic APM, with knowledge of OpenTelemetry for metrics, logs, and distributed tracing.
  • Strong experience with relational databases, including PostgreSQL, Oracle, and MySQL, with the ability to write complex SQL queries and design efficient database structures.
  • Knowledge of NoSQL databases such as MongoDB, CouchDB, and Cosmos DB, including consistency and performance considerations.
  • Experience with version control systems and development workflows, including GitFlow, trunk-based development, and exposure to legacy systems using SVN.
  • Experience designing, developing, documenting, and securing RESTful APIs and web services, including the use of OpenAPI/Swagger.
  • Knowledge of containerization and orchestration technologies such as Docker and Kubernetes.
  • Understanding of authentication and authorization standards, including OAuth 2.0, OpenID Connect (OIDC), JWT, and EU Login.
  • Experience working with and strong understanding of the i2 technology stack.

One of the following or an equivalent certification:

  • AWS Certified Developer
  • Associate, Microsoft Azure Developer Associate, or CNCF Certified Kubernetes
  • Application Developer (CKAD).

At Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at Diversity, Equality & Inclusion Policy for more information.

Skills Required

  • Proficiency in back-end development with Python.
  • Experience with Spring Boot, Hibernate, and Node.js.
  • Strong understanding of the full web development lifecycle, programming concepts, development tools, and best practices.
  • Experience with Dynatrace, Splunk, or Elastic APM, and knowledge of OpenTelemetry.
  • Strong experience with PostgreSQL, Oracle, and MySQL, including complex SQL queries and database design.
  • Knowledge of MongoDB, CouchDB, and Cosmos DB, including consistency and performance considerations.
  • Experience with GitFlow and trunk-based development, with exposure to SVN.
  • Experience designing, developing, documenting, and securing RESTful APIs and web services using OpenAPI or Swagger.
  • Knowledge of Docker and Kubernetes.
  • Understanding of OAuth 2.0, OpenID Connect, JWT, and EU Login.
  • Experience with and strong understanding of the i2 technology stack.
  • AWS Certified Developer Associate, Microsoft Azure Developer Associate, or CNCF Certified Kubernetes Application Developer certification, or equivalent.
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The Company
HQ: Athens
962 Employees
Year Founded: 1964

What We Do

Uni Systems, a member of Quest Group, has been a reliable ICT partner to companies and organizations in the European market for over 60 years. We are the first IT company founded in Greece, in 1964, and we have been supporting our clients ever since. Trusting customers, extensive solutions offering, strong partnerships and experienced people, those are the main grounds for Uni Systems’ rapid expansion of operations across geographies and industries. With more than 1450 specialized ICT professionals, established presence in more than 20 countries, and branches and subsidiaries in the heart of the European Union (Athens, Barcelona, Brussels, Bucharest, Luxembourg and Milan), we are effectively addressing the needs of European and International organizations and institutions and delivering value-added integrated solutions to our customers. Through our strong industrial vertical expertise, supported by the range of our horizontal solutions, we hold a substantial and successful track record in the delivery and implementation of large-scale, mission-critical projects in the sectors of Banking & Finance, Enterprise & Utilities, Government, and Telecommunications, as well as in EU Institutions and Agencies. Participations in real commercial implementations of best practices (i.e. ITIL, RUP, PRINCE2, PMI), has provided our people with significant experience, unique know-how and proven capability in designing, implementing and successfully supporting complex ICT projects, through a range of solutions and business areas. At Uni Systems, we support innovation, and we have been investing in the European and National research ecosystem. Our Research and Innovation (RDI) department has been successfully bidding and winning a series of research programs in promising technological areas, such as 5G, AI in Health, and Blockchain in Governance. Enabling our clients' digital transformation journey is our passion and we remain strongly committed to it.

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